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Mathematics 20 Online
OpenStudy (anonymous):

Select an ordered pair from the choices below that is a solution to the following system of inequalities: 4y > -5 + x 9x − 4y < 7 A. (1, 0) B. (-6, -4) C. (2, -1) D. (-7, -2

OpenStudy (anonymous):

@lgbasallote

OpenStudy (lgbasallote):

okay...you were asking if it was B or D let's try B (-6,-4) <--plug this into 4y > -5 + x 4(-4) > -5 + -6 -16 > -11 -16 is NOT greater than -11

OpenStudy (anonymous):

option D is correct like the prvious problem explanation .substitute the points in the equation

OpenStudy (anonymous):

this technique is used to verify the correctness of the solution

OpenStudy (lgbasallote):

now let's try D (-7,-2)<--plug into 4y > -5 + x 4(-2) > -5 + -7 -8 > -12 ^this is true now let us verify with the second equation (-7,-2) <--plug into 9x - 4y < 7 9(-7) - 4(-2) < 7 -63 + 8 < 7 -55 < 7 ^do you think that is true? is -55 less than 7?

OpenStudy (anonymous):

r8

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